The 953 windows undoubtedly make this the world's most beautiful screened porch.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

This hulking behemoth is actually five interconnected towers built in the 1960s.

This Tibetan monastery has survived multiple attacks and is also a sky burial site.

Hundreds of caves filled with thousands of centuries-old statues and murals.

Comprised of thousands of cave temple carvings this cornucopia of ancient Chinese stone art is unrivaled anywhere in the world.

A bright turquoise river cascades beautifully down stepped terraces in southern China.

Massive series of 45 caves and over 51,000 sculptures carved from cliffsides in China.

Rock-cut caves and 7,000 Buddhist sculptures carved into the nearly sheer face of a sandstone mountain.

A tunnel dug through the side of a mountain by hand provides convenient yet death-defying access to a small village in China.

A complex and beautiful system of rice terraces covers a million acres over the mountains.

Snow-capped peaks, colorful waterfalls and stunning vistas on the edge of the Himalayas.

The tallest stationary dunes on Earth also happen to sing.

The latest in a series of long glass bridges suspended at terrifying heights.

These layered sandstone mountains in China look like they are made of pressed crayons.

270 million year-old forest of stone.

This abandoned fishing settlement may well be the greenest village in the world.

A canvas of crops grow from vibrant red soil in this terraced farmland.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A part of the world's largest marsh seems to be growing bright red Martian grass.

A fifth-century temple improbably built into the side of a cliff.

The village's cobblestone streets are lined with shops displaying exquisite copper craftsmanship.

Foreign invaders almost left this lovely Caucasus palace alone—almost.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.